On Friday morning, iOS hacker winocm announced via his Twitter account that he has a binary that can untether a tethered jailbreak for older devices running iOS 6.1.3.

The tethered jailbreak is only for devices that are susceptible to the limera1n exploit, like the iPhone 4, iPhone 3GS, iPod touch 4G, and so on. Tethered means that you need to connect your device to a computer and run the boot up utility in the jailbreak tool to reboot the device, while with an untethered jailbreak, you can reboot your jailbroken device freely without having to connect to a computer.

Since the binary is intended for untethering an existing tethered jailbreak, the binary would only work for the listed devices, and not newer ones like the iPhone 5, iPhone 4S, iPod touch 5G, and so on. Winocm lets us know that his untether is working on his iPhone 4, but still needs a lot of work.

Notably, the hacker also says that the binary is useless for iOS 7. Specifically, this binary is only for iOS 6.1.3 and no other firmware version. iOS 6.0 through iOS 6.1.2 can be jailbroken untethered already with the evasi0n jailbreak tool.

Winocm has no information regarding any kind of release at this point in time, as the binary still needs work. But nonetheless, it's neat to see that some progress is being made and is surely great news for some of those running iOS 6.1.3 at this time.

Never seen a backwards jailbreak. Has anyone seen a jailbreak that actually goes back for one particular firmware version? backwards compatible yes, (break new and old) but breaking just one ios version, no. 7 is here now not released to the public but it's here. one last bit, If he can do it I hope it's not an exploit remotely related to what developer are eyeing to jailbreak io7.

Dang it totally misread the report. Disregard the rantings of this idiot! My bad!